int IR_FL, IR_FR, IR_BL, IR_BR;

void setup()
{
  Serial.begin(4800);
}

void loop()
{
  IR_FL = analogRead(0);
  IR_FR = analogRead(1);
  IR_BL = analogRead(2);
  IR_BR = analogRead(3);
  Serial.print("FL: ");
  Serial.print(IR_FL);
  Serial.print(" FR: ");
  Serial.print(IR_FR);  
  Serial.print(" BL: ");
  Serial.print(IR_BL);
  Serial.print(" BR: ");
  Serial.println(IR_BR);    
}
